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Commit 1674a415 authored by Veerabhadrarao Badiganti's avatar Veerabhadrarao Badiganti
Browse files

scsi: ufs: Don't turn off link for few vendor devices 



UFS devices from a couple of vendors have a limitation with the
number of power cycles. They can withstand only a certain amount
of power cycles.

Disable turning off the link for those devices so that we can
minimize the number of power cycles.

Change-Id: I87030f63c9312eb216b292549238455054efb706
Signed-off-by: default avatarVeerabhadrarao Badiganti <vbadigan@codeaurora.org>
parent 10108e8f

drivers/scsi/ufs/ufs_quirks.h

+2 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -25,6 +25,7 @@ 
#define UFS_VENDOR_SAMSUNG     0x1CE

#define UFS_VENDOR_SKHYNIX     0x1AD

#define UFS_VENDOR_WDC         0x145

#define UFS_VENDOR_MICRON      0x12C



/**

 * ufs_dev_fix - ufs device quirk info

drivers/scsi/ufs/ufshcd.c

+2 −0
Original line number Diff line number Diff line
@@ -438,6 +438,8 @@ static struct ufs_dev_fix ufs_fixups[] = { 
		UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM),

	UFS_FIX(UFS_VENDOR_TOSHIBA, UFS_ANY_MODEL,

		UFS_DEVICE_QUIRK_NO_LINK_OFF),

	UFS_FIX(UFS_VENDOR_MICRON, UFS_ANY_MODEL,

		UFS_DEVICE_QUIRK_NO_LINK_OFF),

	UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9C8KBADG",

		UFS_DEVICE_QUIRK_PA_TACTIVATE),

	UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9D8KBADG",